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Issue 26, 2020
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Supercapacitor and non-enzymatic biosensor application of an Mn2O3/NiCo2O4 composite material

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Abstract

An efficient way to enhance the energy density of a supercapacitor device is to improve the electrochemical activity of the anode and cathode materials. The electrochemical performance of the NiCo2O4 metal oxide is enhanced by assembling a composite with Mn2O3. Herein, a Mn2O3/NiCo2O4 composite material was synthesized via a one-step in situ hydrothermal method, and the electrochemical and electrocatalytic behaviours were studied. The Mn2O3/NiCo2O4 battery-type electrode material exhibited a maximum specific capacity value of 824 C g−1 at a current density of 1 A g−1 and a superior cyclic stability (85%), making it a suitable anode material for supercapacitor application. A Mn2O3/NiCo2O4//AC asymmetric device exhibited maximum energy density and power density values of 48.6 W h kg−1 and 6.4 kW kg−1, respectively. The superior electrochemical performance of the Mn2O3/NiCo2O4 composite material inspired us to apply it as an electrocatalyst for glucose sensing. The limit of glucose detection and the linear range of the Mn2O3/NiCo2O4 electrocatalytic material were 35 μM and 0.01–15 mM, respectively.

Graphical abstract: Supercapacitor and non-enzymatic biosensor application of an Mn2O3/NiCo2O4 composite material

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Supplementary files

Article information


Submitted
18 Apr 2020
Accepted
08 Jun 2020
First published
08 Jun 2020

New J. Chem., 2020,44, 11316-11323
Article type
Paper

Supercapacitor and non-enzymatic biosensor application of an Mn2O3/NiCo2O4 composite material

A. J. C. Mary, S. S. Shalini, R. Balamurugan, M. P. Harikrishnan and A. C. Bose, New J. Chem., 2020, 44, 11316
DOI: 10.1039/D0NJ01942A

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